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# Getting Started
## Overview
Faker is a popular library that generates fake (but reasonable) data that can be used for things such as:
- Unit Testing
- Performance Testing
- Building Demos
- Working without a completed backend
Faker was originally written in [Perl](https://metacpan.org/dist/Data-Faker) and this is the JavaScript port. Faker is also available as a library for [Ruby](https://github.com/faker-ruby/faker), [Java](https://github.com/DiUS/java-faker), and [Python](https://github.com/joke2k/faker).
This documentation only covers the JavaScript implementation of Faker.
## Environments
You can run Faker in the browser, or in Node.js. Faker v10.0 requires Node.js version 20 or above.
::: tip Note
When using CJS, you need to use at least Node.js v20.19. See https://nodejs.org/api/modules.html#loading-ecmascript-modules-using-require
:::
## Installation
Install it as a Dev Dependency using your favorite package manager.
::: code-group
```shell [npm]
npm install @faker-js/faker --save-dev
```
```shell [pnpm]
pnpm add @faker-js/faker --save-dev
```
```shell [yarn]
yarn add @faker-js/faker --dev
```
:::
## Faker Modules
Faker has three types of modules:
- Modules for basic datatypes: [`datatype`](/api/datatype), [`date`](/api/date), [`number`](/api/number) and [`string`](/api/string)
- Topic specific modules, such as [`animal`](/api/animal), [`food`](/api/food) and many more
- Lastly, the [`helpers`](/api/helpers) module, with various utility methods to use with your own data (or data generated by other Faker methods)
For a full list of modules, go to our [Api Search](/api/) page.
If you would like to know how to use Faker, go to our [Usage Guide](/guide/usage) page.
## Community
If you have questions or need help, reach out to the community via [Discord](https://chat.fakerjs.dev) and [GitHub Discussions](https://github.com/faker-js/faker/discussions).
You can see awesome things related to the Faker community at [Awesome Faker](https://github.com/faker-js/awesome-faker).
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